Mouth sore tracker · The two-week rule · Free · Nothing saved
How long has that sore been there?
Most sores from a bite, a burn or a canker sore heal within about two weeks. Enter the day you first noticed yours to see the date it should be gone by, and what means you should not wait that long.
The two-week rule
Enter the date to see where you are.
Most mouth sores from a bite, a burn or a canker sore heal within about two weeks. Dentists and doctors want to look at anything that has not.
Trouble breathing or swallowing, or swelling spreading in the face or neck, means 911 or the emergency room.
A reminder, not an examination · Nothing you enter is saved
Why two weeks
Healing has a usual pace, and missing it is the signal
The lining of the mouth heals quickly. A bitten cheek, a pizza burn on the palate or an ordinary canker sore usually improves within days and is gone in one to two weeks. That is why dentists and doctors use two weeks as the line: something that is still there after that has not behaved like an ordinary sore, and it deserves a look.
The reason is not that a lingering sore is likely to be serious. Most are not. It is that the few problems that are serious, including oral cancer, are far easier to treat when they are found early, and they often do not hurt at the start. An exam takes a few minutes. Looking at it yourself in a mirror cannot settle the question.
Use the date as a deadline, not as permission to wait. If the spot is growing, bleeding, hard, or comes with numbness or a lump in the neck, book an exam now.
Table 1 — What to note before the visit
What a dentist or doctor will ask
| When you first noticed it | The date, and whether anything happened just before: a bite, a burn, new dental work, a sharp tooth. |
| How it has changed | Bigger, smaller, the same; one spot or several; whether it comes and goes. |
| What it feels like | Painful, tender only when touched, or no feeling at all. |
| What it looks like | A crater, a blister, a lump, or a white or red patch, and whether a patch wipes off. |
| What else is going on | Tobacco or alcohol use, new medications, dentures or braces rubbing, fever or feeling unwell. |
Common questions
- How long does a mouth sore take to heal?
- Most minor mouth sores, such as a bitten cheek, a burn or a common canker sore, improve within a few days and heal in about one to two weeks. A sore that has not healed after two weeks should be examined by a dentist or doctor, even when it does not hurt.
- How can I tell a canker sore from something serious?
- You cannot tell reliably by looking. Canker sores are usually small, round, painful and gone within two weeks. A sore that lasts longer, keeps growing, feels hard, bleeds easily or does not hurt at all does not fit that pattern. Only an exam, and sometimes a small tissue sample, can say what it is.
- Should I see a dentist or a doctor for a mouth sore?
- Either is a reasonable start. Dentists examine the lining of the mouth routinely and can refer you to an oral surgeon or oral medicine specialist if needed. If you also feel unwell, have a fever, or have sores elsewhere on your body, a doctor is the better first call.
- Is a painless sore less of a concern?
- No. Lack of pain is not reassuring on its own, because some conditions that need treatment are painless early on. A painless sore, lump or patch that has been present for two weeks should be examined just as a painful one would be.
General information · Not dental advice
The tracker counts days. It cannot look at a sore or tell you what it is; only an exam can do that. We always recommend seeing a dentist. Nothing on this site can examine your mouth or tell you what is wrong. If something hurts, looks wrong, or worries you, book an exam, and go sooner if it is getting worse.
Emergency? If you have trouble breathing or swallowing, swelling that is spreading toward your eye or neck, a fever with facial swelling, or bleeding that will not stop, call 911 or go to your nearest emergency room immediately. Full disclaimer
About this tool
This tool gives general, educational information only. It does not know your health history, has not examined you, and cannot diagnose anything or tell you what treatment you need. Use it to prepare for a conversation with your dentist, not to replace one.
Medical disclaimer
The information provided on Urgent Dental Helper is for general informational and educational purposes only. It is NOT intended to be a substitute for professional medical or dental advice, diagnosis, or treatment. Urgent Dental Helper is not a dental practice, and nothing here has examined your mouth. Always see a licensed dentist, physician, or other qualified health provider in person about any dental or medical condition. Never disregard professional advice or delay in seeking it because of something you have read or any result you received on this website.